CZ Custom Shop Magazine Extension +20 9mm Luger

This CZ Custom Shop Magazine Extension adds up to 20 rounds to the CZ factory gen 1 Scorpion magazine. Mag spring is included ( may need fitting, depending on that magazine you are using). May or may not lock bolt open on last round fired. The extension was tested extensively using factory ammuntion in a CZ Scorpion select fire weapon. Reliability in your weapon is a combination of ammunition, brass, bullet type/shape, velocity, cleanliness. NotesNot recommended for use with the 30 rnd magazine.Extended basepad magazine spring will not fit Gen 2 black mag follower.